1223143242 has 16 divisors (see below), whose sum is σ = 2505952512. Its totient is φ = 397770080.

The previous prime is 1223143193. The next prime is 1223143247. The reversal of 1223143242 is 2423413221.

It is a happy number.

It is a super-3 number, since 3×1223143242³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223143247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2485818 + ... + 2486309.

It is an arithmetic number, because the mean of its divisors is an integer number (156622032).

Almost surely, 2^1223143242 is an apocalyptic number.

1223143242 is an abundant number, since it is smaller than the sum of its proper divisors (1282809270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223143242 is a wasteful number, since it uses less digits than its factorization.

1223143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972173.

The product of its digits is 2304, while the sum is 24.

The square root of 1223143242 is about 34973.4648269227. The cubic root of 1223143242 is about 1069.4466064357.

Adding to 1223143242 its reverse (2423413221), we get a palindrome (3646556463).

The spelling of 1223143242 in words is "one billion, two hundred twenty-three million, one hundred forty-three thousand, two hundred forty-two".